Top 10 Questions for Laboratory Technologist (Lab Technologist) Interview

1. How would you prepare a Gram stain and what are the expected results for Gram-positive and Gram-negative bacteria?

• Prepare a Gram stain:
  • Create a bacterial smear on a glass slide.
  • Fix the smear with heat.
  • Apply crystal violet and let it sit for 1 minute.
  • Rinse with water.
  • Apply Gram’s iodine and let it sit for 1 minute.
  • Rinse with water.
  • Apply decolorizer (alcohol or acetone) for a few seconds.
  • Rinse with water.
  • Apply safranin and let it sit for 1 minute.
  • Rinse with water and blot dry.
• Expected results:
  • Gram-positive bacteria: Appear purple or blue.
  • Gram-negative bacteria: Appear pink or red.

2. What is the principle of a spectrophotometer and how do you calibrate it?

Principle of a spectrophotometer:

• A spectrophotometer measures the amount of light absorbed by a sample at specific wavelengths.
• The amount of light absorbed is proportional to the concentration of the analyte in the sample.

Calibration:

• Use a blank solution (without the analyte) to set the baseline.
• Use standard solutions with known concentrations of the analyte to create a calibration curve.
• Plot the absorbance values of the standard solutions against their concentrations.
• Use the calibration curve to determine the concentration of the analyte in unknown samples.

3. How would you troubleshoot a malfunctioning centrifuge?

• Check the power supply: Ensure that the centrifuge is plugged in and the power switch is on.
• Check the fuses: If the centrifuge is not receiving power, check the fuses and replace any blown fuses.
• Check the rotor: Ensure that the rotor is properly seated in the centrifuge and that the lid is closed securely.
• Check the speed settings: Verify that the centrifuge is set to the correct speed for the samples being centrifuged.
• Check for leaks: Inspect the centrifuge for any leaks and tighten any loose connections.
• Lubricate the bearings: If the centrifuge is making excessive noise, it may need to be lubricated.

4. What is the difference between a qualitative and quantitative assay and provide an example of each?

• Qualitative assay: Determines the presence or absence of a substance, but not its concentration.
  • Example: Pregnancy test
• Quantitative assay: Determines the concentration or amount of a substance present in a sample.
  • Example: Blood glucose test

5. How do you ensure the quality and accuracy of laboratory results?

• Follow established laboratory protocols and procedures.
• Use calibrated and maintained equipment.
• Perform quality control measures, such as running controls and using reference materials.
• Document all procedures and results.
• Participate in proficiency testing programs.

6. What are the safety precautions that must be observed when working in a laboratory?

• Wear appropriate personal protective equipment (PPE), such as lab coats, gloves, and safety glasses.
• Handle chemicals and hazardous materials with care.
• Follow proper waste disposal procedures.
• Report any accidents or spills immediately.

7. How do you stay up-to-date with the latest advancements in laboratory technology?

• Attend conferences and workshops.
• Read scientific journals and publications.
• Network with other laboratory professionals.
• Participate in online forums and discussion groups.

8. What are your strengths and weaknesses as a Laboratory Technologist?

Strengths:
• Excellent technical skills in laboratory procedures.
• Strong attention to detail and accuracy.
• Ability to work independently and as part of a team.
Weaknesses:
• Lack of experience in certain specialized techniques.
• Working under pressure and meeting deadlines.

9. Why are you interested in this position and why do you think you are a good fit for our laboratory?

Why I am interested in this position:
• The opportunity to contribute my skills and experience to your team.
• The chance to work with state-of-the-art equipment and technology.
• The potential for professional growth and development.
Why I am a good fit for your laboratory:
• My technical skills and experience match the requirements of the position.
• I am a highly motivated and results-oriented individual.
• I am eager to learn new techniques and contribute to the success of your laboratory.

10. What are your salary expectations?

• My salary expectations are in line with the market average for Laboratory Technologists with similar experience and qualifications.
• I am also open to discussing a salary range that is commensurate with the responsibilities of the position and the value I bring to your laboratory.

A Laboratory Technologist (Lab Technologist) is responsible for performing a variety of laboratory tests and procedures to assist in the diagnosis, treatment, and prevention of disease. Key job responsibilities include:

1. Conducting Laboratory Tests

Lab Technologists are responsible for performing a variety of laboratory tests, including:

• Blood tests
• Urine tests
• Fecal tests
• Sputum tests
• Cultures
• Serology tests
• Virology tests

2. Analyzing Test Results

Lab Technologists are also responsible for analyzing the results of laboratory tests. They must be able to interpret the results and identify any abnormalities that may indicate a disease or condition.

3. Preparing and Maintaining Laboratory Equipment

Lab Technologists are responsible for preparing and maintaining laboratory equipment. They must be able to troubleshoot and repair equipment as needed.

4. Maintaining Laboratory Records

Lab Technologists are responsible for maintaining laboratory records. They must be able to accurately record the results of laboratory tests and any other relevant information.

5. Adhering to Safety Protocols

Lab Technologists must adhere to all safety protocols in the laboratory. They must be able to work safely with hazardous materials and equipment.

Preparing for a Laboratory Technologist interview can be daunting, but there are a few things you can do to increase your chances of success. Here are a few tips:

1. Research the Company and Position

Before your interview, it is important to research the company and the position you are applying for. This will help you understand the company’s culture and the specific requirements of the job.

2. Practice Answering Common Interview Questions

There are a number of common interview questions that you can expect to be asked, such as “Why do you want to work for this company?” and “What are your strengths and weaknesses?” It is helpful to practice answering these questions in advance so that you can deliver your answers confidently and concisely.

Here are some example questions that you may be asked in a laboratory technologist interview:

• Tell me about your experience working in a laboratory setting.
• What are your strengths and weaknesses as a laboratory technologist?
• Why are you interested in working for our company?
• What are your career goals?

3. Prepare Questions to Ask the Interviewer

At the end of the interview, the interviewer will likely ask you if you have any questions. This is your opportunity to learn more about the company and the position, and to show the interviewer that you are interested and engaged.

Here are some example questions that you can ask the interviewer:

• What are the biggest challenges facing the laboratory industry today?
• What are the opportunities for advancement within the company?
• What is the company culture like?
• What are the expectations for this position?

4. Dress Professionally

First impressions matter, so it is important to dress professionally for your interview. This means wearing a suit or business casual attire.

5. Be on Time

Punctuality is important, so be sure to arrive for your interview on time. It is also a good idea to arrive a few minutes early so that you can have time to relax and prepare.